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Plus 1
O1 is simple to heat treat, avoid thermal shock if at all possible. Kevin Cashen calls this shocking the snot out of the steel and introduces the possibility of warping or worse. The only...

I echo all these considerations. Getting an optimal heat treat is not to me necessarily important from an hardness aspect but primarily metallurgical. If you get a matrix of soft structures at the...

Like Mike,I like the intention and I am familiar with these methods, I call the 3rd one poor mans marquench although not exactly true it does have the advantage of avoiding thermal shock. For me the...